BMW 328i E36: Noise when decelerating

After swaping my oil heavy drinking M52 engine for a considerably more moderate one, my car makes this noise everytime I lift the throttle, any speed, any gear. No noise when stepping on the throttle. We tried swaping the gearbox, but the noise remained. Now we have installed a new DMF and clutch. Same noise.

[@oguz5010]

What is the Problem from this car?

[@Rmacik]

Middle support bearing or differential noise.

[@alfacorse]

Thanks. I sold the car three years ago but your sugestion about the middle support bearing seems spot on. The noise started just after the engine swap.

[@hosukjeong519]

My x5 n55 engine has same problem. Any one knows the reason?